Results 1 to 9 of 9
  1. #1
    VegasRatt's Avatar
    Join Date
    Sep 2006
    Location
    Sin City
    Posts
    250

    Thumbs up 1200 Cranksharft Replacment idea - fact or fiction

    Hey.. i am going to have to replace the crankshaft in my Genesis 1200. I kind of remember reading someplace that if you replace the 1200 crankshaft with the one out of a 1050 you increase performace. If i remember correctly the 1050 crank is just a little bigger, so it takes up more space in the crankcase, this in return causes higher compression. Is this fact or fiction? If it is true, is it really worth doing? If so, is it a good idea to do on a DI motor?

    Yeah i know.. lots of questions.......


  2. #2
    compression happens above the piston not below! not sure what the deal is on the 2 cranks however

  3. #3
    VegasRatt's Avatar
    Join Date
    Sep 2006
    Location
    Sin City
    Posts
    250
    That has been my understanding on how compression works, that is why i figured i would ask. I'm try'n to find where i read that at so no one things my cheese slid off its craker.... but i know i've read it someplace.....

  4. #4
    Last edited by ZMANN; 02-16-2008 at 05:13 PM.

  5. #5
    VegasRatt's Avatar
    Join Date
    Sep 2006
    Location
    Sin City
    Posts
    250
    LOL.... thanks ZMANN

  6. #6

    Join Date
    Aug 2006
    Location
    Homer Glen Il.
    Posts
    8,704
    +1
    109
    you can not use the 1050 crank without totally modding it and for a stock boat it's just a waste of time and money . check out the guy parting out the genisis with the brand new crank . buy his crank and you'll be all set .
    or have yours redone .

  7. #7
    VegasRatt's Avatar
    Join Date
    Sep 2006
    Location
    Sin City
    Posts
    250
    Thanks Lugs, do you happen to know who the guy is who is part (inq out his ski? I will look in the cIasifieds too, thanks.

  8. #8

    Join Date
    Aug 2006
    Location
    Homer Glen Il.
    Posts
    8,704
    +1
    109

  9. #9
    2&4strokepolaristech's Avatar
    Join Date
    Aug 2006
    Location
    Oswego,NY
    Posts
    919
    +1
    6
    you have to use the 1200 crank b/c the stroke is 70mm vs 68 on the 900/1050 crank. also the rods are different . plus the crank phasing on the 1200 for a d.i. has to be on the money or else it will not run right if you need a rebuilt crank i have them in stock. you do not even need a core if you do not have one.

    Jay
    Last edited by 2&4strokepolaristech; 02-16-2008 at 10:11 PM.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. 4" air Intake Fact Or Fiction?
    By Knottyscotty in forum 4-Tec Performance
    Replies: 10
    Last Post: 03-10-2011, 10:56 PM
  2. Idea...cool or gay.....tell me your thoughts
    By NJJer in forum Towing and Trailers
    Replies: 21
    Last Post: 12-30-2009, 04:59 PM
  3. 2001 - Pro 1200 - Driveshaft Replacement
    By elwayisgod in forum Polaris How To & FAQs
    Replies: 1
    Last Post: 07-16-2009, 04:37 PM
  4. 2001 - Pro 1200 - Driveshaft Replacement
    By elwayisgod in forum Polaris Open Discussion
    Replies: 3
    Last Post: 07-15-2009, 01:37 PM
  5. 2001 xlt 1200 pumpshoe replacement
    By swade in forum Yamaha PWC Performance (2-stroke)
    Replies: 0
    Last Post: 08-20-2007, 05:01 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •